chore: 初始提交 Fonu 1.0.2

- 公网反代：Nginx 状态卡片（版本 / 运行状态 / 配置校验 / 端口监听）
- 部署设置第一、二梯队（HTTPS 开关、安全头、限流、连接数、仅中国大陆 IP）
- 隧道检测兼容 frps v0.68 / v0.71（V2 与旧版端点）
- 恢复被清空的 internal/frp/store.go、internal/api/ddns_handler.go、web/src/views/DdnsView.vue

internal/nginx/generate_https_no_cert_test.go

@@ -0,0 +1,38 @@
+package nginx
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/fonu/fonu/internal/config"
+	"github.com/fonu/fonu/internal/proxy"
+)
+
+func TestGenerateHTTPSWithoutCertUsesHTTPOnly(t *testing.T) {
+	cfg := config.Config{
+		DataDir:        t.TempDir(),
+		NginxPIDFile:   t.TempDir() + "/nginx.pid",
+		NginxMimeTypes: t.TempDir() + "/mime.types",
+	}
+	rules := []proxy.Rule{{
+		ListenPort:   8011,
+		ListenIPv4:   true,
+		ListenIPv6:   true,
+		Hosts:        []proxy.Host{{Hostname: "app.example.com"}},
+		Upstream:     "http://192.168.8.3:6893",
+		HTTPSEnabled: true,
+		HTTPRedirect: true,
+		Enabled:      true,
+	}}
+
+	content, err := Generate(cfg, rules, nil, GenerateOptions{})
+	if err != nil {
+		t.Fatalf("generate failed: %v", err)
+	}
+	if strings.Contains(content, " ssl") {
+		t.Fatalf("expected no ssl listen without certificate:\n%s", content)
+	}
+	if !strings.Contains(content, "proxy_pass http://192.168.8.3:6893") {
+		t.Fatalf("expected http proxy fallback:\n%s", content)
+	}
+}